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Finding the Fourth Proportional to 393,783.45, 590,769.27 and 127,544.28

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Solution

The fourth proportional to 393,783.45, 590,769.27 and 127,544.28 is: 191,346.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,783.45 : 590,769.27 = 127,544.28 : x
  2. Step 2: Convert to fraction form
    393,783.45/590,769.27 = 127,544.28/x
  3. Step 3: Cross multiply
    393,783.45x = 590,769.27 × 127,544.28
  4. Step 4: Simplify right side
    393,783.45x = 75,349,241,188.28
  5. Step 5: Solve for x
    x = 75,349,241,188.28/393,783.45
  6. Step 6: Final answer
    x = 191,346.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.